Distributed Synchronization for Decentralized Beamforming
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional approaches to distributed synchronization and beamforming either require centralized control or assume perfect synchrony of local oscillators, failing to achieve true decentralization and limiting the ability to reposition or frequency-shift coherent beams without precise device position knowledge.
Innovation Solution
A method for obtaining a synchronized periodic signal in a distributed fashion without centralized control, where nodes communicate and combine signals to generate a coherent beam at a target location and frequency, using independent local oscillators and filtering techniques, allowing for decentralized operation and flexible beam positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If centralized control is used to synchronize distributed devices, then synchronization precision is improved, but device complexity and system cost increase
Solution Approach 1:
Each distributed device independently generates its own synchronization signal by processing received signals from other devices through local oscillators and signal combination circuits, eliminating the need for centralized control while achieving precise synchronization across all devices
Solution Approach 2:
The system uses bidirectional signal exchange between devices where each device receives signals from others, processes them through local oscillators, and feeds back the processed signals to other devices, creating a self-synchronizing feedback loop that achieves precise synchronization without centralized control
2Measurement precision
If precise position knowledge of each device is obtained, then beamforming precision is improved, but measurement complexity and time increase
Solution Approach 1:
Each device independently determines its position and timing information by processing signals from other devices through its local oscillator and signal processing circuitry, eliminating the need for centralized position measurement while achieving precise beamforming
Solution Approach 2:
The system performs preliminary signal exchange and synchronization between devices before beamforming operation, allowing each device to pre-determine its position and timing parameters, which simplifies subsequent beamforming operations without requiring real-time position measurement
3Ease of operation
If a single beacon is used for retrodirective beamforming, then device independence is improved, but beam flexibility deteriorates
Solution Approach 1:
The system replaces the single beacon concept with multiple distributed devices that each independently process and transmit signals, segmenting the beamforming function across multiple independent units while maintaining device independence and achieving flexible beam positioning through coordinated signal combination
Solution Approach 2:
Each distributed device serves multiple functions: it acts as both a signal receiver and transmitter, performs local oscillation and signal processing, and contributes to both synchronization and beamforming operations, enabling flexible beam positioning without requiring a dedicated beacon
Data Source
AI summary
The invention provides a set of methods and systems for obtaining a synchronized signal in a distributed fashion. The methods and systems described herein allow a node to obtain a periodic signal that would be synchronized with the periodic signal obtained at another node when both nodes follow the same synchronizing procedure, without the need for centralized control of both nodes or the need for all nodes to have coordinated local oscillators. The invention includes beamforming methods and systems for producing a coherent beam at a target location and at a target frequency using the synchronized signal.